package com.ztao.utils.filter;

import com.ztao.utils.AppJwtUtil;
import io.jsonwebtoken.Claims;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@Component
public class AdminFilter implements Ordered, GlobalFilter {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpResponse response = exchange.getResponse();
        ServerHttpRequest request = exchange.getRequest();
        String path = request.getURI().getPath();
        if (path.contains("/login")) {
            return chain.filter(exchange);
        } else {
            String token = request.getHeaders().getFirst("token");
            if (token == null){
                response.setStatusCode(HttpStatus.UNAUTHORIZED);
                return response.setComplete();
            }
            Claims claimsBody = AppJwtUtil.getClaimsBody(token);
            int i = AppJwtUtil.verifyToken(claimsBody);
            if (i == 1 || i == 2) {
                response.setStatusCode(HttpStatus.FORBIDDEN);
                return response.setComplete();

            } else {
                return chain.filter(exchange);
            }
        }
    }

    @Override
    public int getOrder() {
        return -1;
    }
}
